[Python] FastAPI's generated API docs drop down for showing multiple examples for the request...

I am following the FastAPI tutorial, specifically the part about displaying multiple examples: https://fastapi.tiangolo.com/tutorial/schema-extra-example/.

I copied the code:

from typing import Optional

from fastapi import Body, FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
name: str
description: Optional[str] = None
price: float
tax: Optional[float] = None


@app.put("/items/{item_id}")
async def update_item(
*,
item_id: int,
item: Item = Body(
...,
examples={
"normal": {
"summary": "A normal example",
"description": "A **normal** item works correctly.",
"value": {
"name": "Foo",
"description": "A very nice Item",
"price": 35.4,
"tax": 3.2,
},
},
"converted": {
"summary": "An example with converted data",
"description": "FastAPI can convert price `strings` to actual `numbers` automatically",
"value": {
"name": "Bar",
"price": "35.4",
},
},
"invalid": {
"summary": "Invalid data is rejected with an error",
"value": {
"name": "Baz",
"price": "thirty five point four",
},
},
},
),
):
results = {"item_id": item_id, "item": item}
return results


...exactly as it is displayed on the page and I run it using Uvicorn. On my my screen I do not see any drop down with the 3 examples in the example dictionary of the request body. All I see is a single example value with just the types the fields need to be.

Why would that be and why is this not working for me please?

This is what I should get:



But this is what I get:



Continue reading...